Around the same time as Kronecker obtained his doctorate, Gauss’ star pupil Riemann also transferred to Berlin, where he stayed for two years before returning to Göttingen in 1849. The German university system at the time allowed students to easily move from one university to another. Dedekind, Riemann’s closest contemporary transferred to Berlin as well. They both received their habilitation in 1854. Afterwards they both returned to Göttingen as Privatdozents